Properties of the Number -87556

Eighty-Seven Thousand Five Hundred Fifty-Six

Basics

Value: -87557 → -87556 → -87555

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 7 × 53 × 59

Divisors: 1, 2, 4, 7, 14, 28, 53, 59, 106, 118

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011000000100

Octal: -253004

Duodecimal: -42804

Hexadecimal: -15604

Square: 7666053136

Square Root: 295.89863129119067

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having exactly k entries that are midpoints of 321 patterns (0 <= k <= n-2 for n >= 2; k=0 for n=1). A145879

Numerators of continued fraction convergents to sqrt(781). A42506

Triangle T(n,k), read by rows, given by (1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...) δ (0, 0, 1, 1, 2, 2, 3, 3, 4, 4, ...) where δ is the operator defined in A084938. A202992